SECURITY REPORT · EXTENSHI SCAN
Readwise
Firefox extension·by Readwise
0
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Readwise's safety score vs every other extension we've scanned
Globally
88.78999999999999%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
78.78999999999999%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
15
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
10
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 15 distinct issues across 6 severities
15
distinct issues
detected
detected
Critical00%
High17%
Needs Review00%
Medium1387%
Low17%
Info00%
Permissions requested
3 risky permissions of 10 total
3 high-risk permissions require attention
This extension requests 10 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
View open tabs
Can see URLs and titles of all open tabs
High
Observe web requests(optional)
Can monitor all network requests made by the browser
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Add context menu items
Can add custom items to the right-click context menu
Low
Schedule tasks
Can schedule periodic background tasks
Info
*://read.amazon.com/*
No additional information available.
Info
*://*.readwise.io/*
No additional information available.
Info
*://*.readwise.io/twitter_start*
No additional information available.
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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